Clamp for bicycle-saddles



(No Model.)

.J. A. HUNT. CLAMP FOR BICYCLE SADDLES.

No. 601 890. Patented Apr. 5,-189'8.

III/l,

, VA) 1mm UNITED STATES PATENT OFFICE.

JONATHAN A. HUNT, OF WESTBOROUGH, MASSACHUSETTS.

CLAMP :FOR BlCYCLE-SADDLES.

SPECIFICATION forming part of Letters Patent No. 601,890, dated April 5,1898. 7 Application filed January 25, 1897- Serial No. 620,596. (Nomodel.)

To all whom it may concern/.-

Be it known that I, JONATHAN A. HUNT, .a citizen of the United States,residing at Westborough,in the county of Worcester and State ofMassachusetts, have invented certain new and useful Improvements inClamps for Bicycle-Saddles, &c., of which the following is aspecification.

My invention relates to a clamp, and more particularly to a clamp forattaching the spring of a bicycle-saddle to the saddle post or supporton the bicycle-frame; and the object of my invention is to make a clampof simple and inexpensive construction; and my invention consists incertain novel features .of construction of my clamp, as will beherelooking in the direction of arrow a, same fig-- Fig. 4 is a verticalsection on line 4 4,

ure. Fig. 2, looking in the direction of arrow 1), same figure. Fig. 5shows a side or edge View of the clamp casing or shell before the collaror band is applied thereto and the clampingbolt and blocks or jawscombined therewith, and Fig. 6 shows a side view of the block or jawagainst which the inner end of the clamping-bolt bears.

In the accompanying drawings, 1 is the tubular saddle-support, of anyordinary construction. 2 is the spring, which is also of well-knownshape and construction and made of two substantially parallel rods 2' 2,which are preferably circular in cross-section and extend in the samehorizontal plane.

My improved clamp consists of the casing or shell 3, which in itscompleted form is preferably of substantially elongated diamond shape,with an extension 3 on one side or end thereof. The extension 3 ispreferably of tubular shape and is screw-threaded internally to receivethe clamping screw or bolt 4. (See Fig. 3.)

In practice Iprefer to make the shell 3 out of a fiat strip or piece ofsteel, which is bent over at its middle portion on itself and the twofree ends before or after the bending compressed and shaped to make a,tubular exten- 'sion,which is split longitudinally, as shown in Fig. 6.A collar or band 5 is then secured on the tubular extension 3 to drawtogether and rigidly hold the two parts thereof, and the interior of thetubular extension is threaded to receive the clamping-bolt 4.

The outer or exterior corners or projections of the shell 3 arepreferably rounded, and the interior angles or recesses are alsopreferably made rounded, as shown in Fig.6.

Combined with-the casing or shell 3 and the clamping-bolt 4 to securethe supportl in the clamp and at thesame time to secure the two rods ofthe spring 2 in the clamp and also to the support are two removableblocks or jaws 6 and 7, which extend through the shell 3, one on eachside of the support 1. Each block 6 and 7 is recessed or grooved on itsinner surface or edge to receive the tubular support 1 and is alsorecessed or grooved on its outer surface or edge to receive the rods 2of the spring 2. (See Figs. 2 and 3.)

The ends of the blocks 6 and 7 are preferably provided with lipsor'flanges 6' and 7 to extend over the edges of the shell 3 and preventsaid blocks from moving longitudinally or slipping out of the shell 3after the support 1 is inserted between them.

A third block or jaw 8 is preferably used in connection with the blocks6 and 7. The block 8 has one edge or surface grooved or recessed toreceive one rod 2 of the spring 2. The opposite surface or edge of theblock 8 is preferably rounded or convex to fit into the rounded end ofthe shell 1 and has in this instance an extension 8 thereon, circular incross-section, which extends into the tubular extension 3 of the casing3. The end of the clamping-screw 4 bears against the end of theextension 8. (See Fig.3.)

From the above description, in connection with the drawings, theoperation of my clamp will be readily understood by those skilled in theart.

The block or jaw 8 is preferably first placed in the shell 3 with theextension 8' extending into the tubular extension 3. (See Fig. 3.) Thefree ends of the spring 2 are then inserted through the shell 3, and theblocks or jaws 6 and 7 are then placed in the shell with the lips orflanges 6 and 7 overlapping the edges of the shell. The support 1 isthen inserted between the blocks 6 and '7 and the clamp moved to thedesired position on said support and the spring 2 moved to the desiredposition in the clamp. The clamping-bolt 4 is then screwed in, and theend thereof bears against the extension 8' on the block 8 and acts tocommunicate direct pressure in a horizontal plane to the clamping-jawsand forces said block inwardly against one rod 2 of the spring 2and,thr'ough said rod, forces the block 7 against the support 1 and thesupport 1 against the block 6 and the block 6 against the other rod 2 ofthe spring 2 and said rod 2 against the end of the shell 3, (see Fig.3,) thus clamping and holding the several parts.

It will be understood that the details of construction of some of theparts of my clamp may be varied, if desired, and the shape thereof maybe varied somewhat. The movable block 8 may be dispensed with and theinner end of the bolt or screw 4 bear directly outer edges,substantially as shown and described.

2. In a clamp for bicycle-saddle springs, the combination with thecasing or shell split or divided at one side or end, and having atubular internal-threaded extension on said divided end, and a collar orholding-band thereon, and a clamping-bolt turning in said tubu- 'larextension, of two clamping blocks or jaws having grooved or recessedinner edges, and grooved or recessed outer edges, and a thirdclamping-block, against which the inner end of the clamping-bolt bears,substantially as shown and described.

J. A. HUNT.

W'itn esses:

J. O. DEWEY, M. J. GALVIN.

